Single-Interlock Preaction System With Pneumatic Release

Viking valve and system offerings provide customers with industry-leading quality that lasts — making the choice to select a Viking valve and system product, such as a Single-Interlock Preaction System With Pneumatic Release, easier than ever!! 

Single-Interlocked Preaction Systems are commonly used where the sprinkler system piping and/or sprinkler may be subject to damage. The most common applications are in areas where it is important to control accidental water discharge due to a damaged sprinkler or damaged sprinkler piping.
Viking’s supervised Single-Interlocked Preaction Systems use a Viking Deluge Valve and a pneumatically pressurized automatic sprinkler system. The system piping is pneumatically pressurized for supervisory purposes only. This feature serves to prevent undetected leaks.  If the system piping or a sprinkler is damaged, supervisory pressure is reduced and a “low air” alarm is activated.

Pneumatically controlled preaction systems require a pneumatic release system, equipped with thermostatic (rate of rise) releases, and/or fixed temperature releases, and/or pilot heads. Release trim for the pneumatically controlled deluge valve requires a pneumatic actuator normally held closed by pressure maintained in the pneumatic release system. In fire conditions, operation of the pneumatic release system opens the deluge valve to fill the system with water. If any sprinklers have opened, water will flow from the system. If sprinklers have not opened, water will be in the sprinkler system piping when the sprinkler operates. A sprinkler head must open before water flows from the system.

Tried out the innovative Valve & System Configurator(opens in a new window) yet? Build out a complete system riser by stepping through the options you need to complete your system, and get a list of materials ready to submit to your local Viking SupplyNet for quoting. You can even link right to SupplyNet.com from the parts list where we make it easy to get what you need when you need it. Check it out!